[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.897202][ T32] audit: type=1800 audit(1567488746.956:25): pid=11447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.920232][ T32] audit: type=1800 audit(1567488746.976:26): pid=11447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.963882][ T32] audit: type=1800 audit(1567488747.006:27): pid=11447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. 2019/09/03 05:32:43 fuzzer started 2019/09/03 05:32:47 dialing manager at 10.128.0.26:32913 2019/09/03 05:32:47 syscalls: 2376 2019/09/03 05:32:47 code coverage: enabled 2019/09/03 05:32:47 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2019/09/03 05:32:47 extra coverage: enabled 2019/09/03 05:32:47 setuid sandbox: enabled 2019/09/03 05:32:47 namespace sandbox: enabled 2019/09/03 05:32:47 Android sandbox: /sys/fs/selinux/policy does not exist 2019/09/03 05:32:47 fault injection: enabled 2019/09/03 05:32:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/09/03 05:32:47 net packet injection: enabled 2019/09/03 05:32:47 net device setup: enabled syzkaller login: [ 197.524930][ C1] ================================================================== [ 197.533094][ C1] BUG: KMSAN: uninit-value in kmem_cache_alloc_node+0x5d0/0xe70 [ 197.540737][ C1] CPU: 1 PID: 11594 Comm: syz-fuzzer Not tainted 5.3.0-rc6+ #0 [ 197.548282][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 197.558315][ C1] Call Trace: [ 197.561732][ C1] [ 197.564576][ C1] dump_stack+0x191/0x1f0 [ 197.568891][ C1] kmsan_report+0x162/0x2d0 [ 197.573374][ C1] __msan_warning+0x75/0xe0 [ 197.577981][ C1] kmem_cache_alloc_node+0x5d0/0xe70 [ 197.583251][ C1] ? __alloc_skb+0x215/0xa10 [ 197.587838][ C1] __alloc_skb+0x215/0xa10 [ 197.592241][ C1] aoecmd_cfg+0x205/0xa80 [ 197.596621][ C1] discover_timer+0x86/0xa0 [ 197.601107][ C1] call_timer_fn+0x232/0x530 [ 197.605679][ C1] ? skbfree+0x4a0/0x4a0 [ 197.609902][ C1] __run_timers+0xcdc/0x11a0 [ 197.614470][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.620514][ C1] ? skbfree+0x4a0/0x4a0 [ 197.624750][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.630708][ C1] run_timer_softirq+0x2d/0x50 [ 197.635457][ C1] ? timers_dead_cpu+0x9d0/0x9d0 [ 197.640374][ C1] __do_softirq+0x4a1/0x83a [ 197.644867][ C1] do_softirq_own_stack+0x49/0x80 [ 197.649864][ C1] [ 197.652783][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 197.657971][ C1] local_bh_enable+0x36/0x40 [ 197.662542][ C1] ip_finish_output2+0x20dc/0x25d0 [ 197.667637][ C1] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 197.673686][ C1] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 197.679668][ C1] __ip_finish_output+0xaf8/0xda0 [ 197.684680][ C1] ip_finish_output+0x2db/0x420 [ 197.689513][ C1] ip_output+0x541/0x610 [ 197.693750][ C1] ? ip_mc_finish_output+0x6d0/0x6d0 [ 197.699021][ C1] ? ip_finish_output+0x420/0x420 [ 197.704047][ C1] __ip_queue_xmit+0x1caf/0x21f0 [ 197.708982][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.714949][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.721005][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 197.727069][ C1] ip_queue_xmit+0xcc/0xf0 [ 197.731466][ C1] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 197.737076][ C1] __tcp_transmit_skb+0x409e/0x5c60 [ 197.742303][ C1] __tcp_send_ack+0x701/0x840 [ 197.747015][ C1] tcp_send_ack+0x68/0x90 [ 197.751329][ C1] tcp_cleanup_rbuf+0x764/0x800 [ 197.756167][ C1] tcp_recvmsg+0x334d/0x4ff0 [ 197.760767][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.766728][ C1] ? tcp_mmap+0x150/0x150 [ 197.771035][ C1] ? tcp_mmap+0x150/0x150 [ 197.775345][ C1] inet_recvmsg+0x237/0x7d0 [ 197.779830][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 197.784589][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 197.790560][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 197.795301][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 197.800070][ C1] sock_read_iter+0x5be/0x660 [ 197.804744][ C1] ? kernel_sock_ip_overhead+0x340/0x340 [ 197.810353][ C1] __vfs_read+0xa67/0xc90 [ 197.814672][ C1] vfs_read+0x359/0x6f0 [ 197.818819][ C1] ksys_read+0x265/0x430 [ 197.823044][ C1] __se_sys_read+0x92/0xb0 [ 197.827445][ C1] __x64_sys_read+0x4a/0x70 [ 197.831931][ C1] do_syscall_64+0xbc/0xf0 [ 197.836341][ C1] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 197.842267][ C1] RIP: 0033:0x47fcb4 [ 197.846228][ C1] Code: ff ff cc cc cc cc e8 2b 41 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 197.865814][ C1] RSP: 002b:000000c420179760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 197.874201][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 197.882159][ C1] RDX: 0000000000001000 RSI: 000000c4203c8000 RDI: 0000000000000003 [ 197.890123][ C1] RBP: 000000c4201797b0 R08: 0000000000000000 R09: 0000000000000000 [ 197.898076][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000020 [ 197.906035][ C1] R13: 0000000000000020 R14: 0000000000000020 R15: ffffffffffffffff [ 197.914014][ C1] [ 197.916322][ C1] Uninit was stored to memory at: [ 197.921482][ C1] kmsan_internal_chain_origin+0xcc/0x150 [ 197.927186][ C1] __msan_chain_origin+0x6b/0xe0 [ 197.932114][ C1] ___slab_alloc+0x1dbc/0x1fb0 [ 197.936853][ C1] kmem_cache_alloc_node+0x769/0xe70 [ 197.942125][ C1] __alloc_skb+0x215/0xa10 [ 197.946519][ C1] aoecmd_cfg+0x205/0xa80 [ 197.950835][ C1] discover_timer+0x86/0xa0 [ 197.955322][ C1] call_timer_fn+0x232/0x530 [ 197.959892][ C1] __run_timers+0xcdc/0x11a0 [ 197.964455][ C1] run_timer_softirq+0x2d/0x50 [ 197.969204][ C1] __do_softirq+0x4a1/0x83a [ 197.973698][ C1] do_softirq_own_stack+0x49/0x80 [ 197.978697][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 197.983880][ C1] local_bh_enable+0x36/0x40 [ 197.988473][ C1] ip_finish_output2+0x20dc/0x25d0 [ 197.993583][ C1] __ip_finish_output+0xaf8/0xda0 [ 197.998583][ C1] ip_finish_output+0x2db/0x420 [ 198.003419][ C1] ip_output+0x541/0x610 [ 198.007651][ C1] __ip_queue_xmit+0x1caf/0x21f0 [ 198.012585][ C1] ip_queue_xmit+0xcc/0xf0 [ 198.016976][ C1] __tcp_transmit_skb+0x409e/0x5c60 [ 198.022159][ C1] __tcp_send_ack+0x701/0x840 [ 198.026819][ C1] tcp_send_ack+0x68/0x90 [ 198.031122][ C1] tcp_cleanup_rbuf+0x764/0x800 [ 198.035981][ C1] tcp_recvmsg+0x334d/0x4ff0 [ 198.040548][ C1] inet_recvmsg+0x237/0x7d0 [ 198.045036][ C1] sock_read_iter+0x5be/0x660 [ 198.049689][ C1] __vfs_read+0xa67/0xc90 [ 198.054018][ C1] vfs_read+0x359/0x6f0 [ 198.058159][ C1] ksys_read+0x265/0x430 [ 198.062378][ C1] __se_sys_read+0x92/0xb0 [ 198.066771][ C1] __x64_sys_read+0x4a/0x70 [ 198.071261][ C1] do_syscall_64+0xbc/0xf0 [ 198.075663][ C1] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 198.081534][ C1] [ 198.083838][ C1] Uninit was created at: [ 198.088071][ C1] kmsan_internal_poison_shadow+0x53/0xa0 [ 198.093766][ C1] kmsan_slab_free+0x8d/0x100 [ 198.098417][ C1] kmem_cache_free_bulk+0x3ad9/0x3f50 [ 198.103778][ C1] __kfree_skb_flush+0xb0/0x100 [ 198.108612][ C1] net_rx_action+0x1908/0x1950 [ 198.113351][ C1] __do_softirq+0x4a1/0x83a [ 198.117829][ C1] irq_exit+0x230/0x280 [ 198.121956][ C1] do_IRQ+0x20d/0x3a0 [ 198.125915][ C1] ret_from_intr+0x0/0x33 [ 198.131140][ C1] default_idle+0x53/0x90 [ 198.135455][ C1] arch_cpu_idle+0x25/0x30 [ 198.139846][ C1] do_idle+0x1d7/0x790 [ 198.143979][ C1] cpu_startup_entry+0x45/0x50 [ 198.148732][ C1] start_secondary+0x370/0x470 [ 198.153471][ C1] secondary_startup_64+0xa4/0xb0 [ 198.158463][ C1] ================================================================== [ 198.166498][ C1] Disabling lock debugging due to kernel taint [ 198.172625][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 198.179192][ C1] CPU: 1 PID: 11594 Comm: syz-fuzzer Tainted: G B 5.3.0-rc6+ #0 [ 198.190889][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 198.200964][ C1] Call Trace: [ 198.204228][ C1] [ 198.207066][ C1] dump_stack+0x191/0x1f0 [ 198.211478][ C1] panic+0x3c9/0xc1e [ 198.215374][ C1] kmsan_report+0x2ca/0x2d0 [ 198.219856][ C1] __msan_warning+0x75/0xe0 [ 198.224350][ C1] kmem_cache_alloc_node+0x5d0/0xe70 [ 198.229615][ C1] ? __alloc_skb+0x215/0xa10 [ 198.234202][ C1] __alloc_skb+0x215/0xa10 [ 198.238616][ C1] aoecmd_cfg+0x205/0xa80 [ 198.242943][ C1] discover_timer+0x86/0xa0 [ 198.247425][ C1] call_timer_fn+0x232/0x530 [ 198.251995][ C1] ? skbfree+0x4a0/0x4a0 [ 198.256232][ C1] __run_timers+0xcdc/0x11a0 [ 198.260827][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 198.266984][ C1] ? skbfree+0x4a0/0x4a0 [ 198.271223][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.277177][ C1] run_timer_softirq+0x2d/0x50 [ 198.281916][ C1] ? timers_dead_cpu+0x9d0/0x9d0 [ 198.286831][ C1] __do_softirq+0x4a1/0x83a [ 198.291332][ C1] do_softirq_own_stack+0x49/0x80 [ 198.296336][ C1] [ 198.299278][ C1] __local_bh_enable_ip+0x184/0x1d0 [ 198.304471][ C1] local_bh_enable+0x36/0x40 [ 198.309042][ C1] ip_finish_output2+0x20dc/0x25d0 [ 198.314141][ C1] ? __msan_metadata_ptr_for_load_2+0x10/0x20 [ 198.320182][ C1] ? nf_ct_deliver_cached_events+0x4d5/0x6e0 [ 198.326508][ C1] __ip_finish_output+0xaf8/0xda0 [ 198.331519][ C1] ip_finish_output+0x2db/0x420 [ 198.336365][ C1] ip_output+0x541/0x610 [ 198.340603][ C1] ? ip_mc_finish_output+0x6d0/0x6d0 [ 198.345880][ C1] ? ip_finish_output+0x420/0x420 [ 198.350883][ C1] __ip_queue_xmit+0x1caf/0x21f0 [ 198.355812][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.361865][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 198.367927][ C1] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 198.374014][ C1] ip_queue_xmit+0xcc/0xf0 [ 198.378424][ C1] ? tcp_v4_inbound_md5_hash+0xd10/0xd10 [ 198.384035][ C1] __tcp_transmit_skb+0x409e/0x5c60 [ 198.389244][ C1] __tcp_send_ack+0x701/0x840 [ 198.393915][ C1] tcp_send_ack+0x68/0x90 [ 198.398223][ C1] tcp_cleanup_rbuf+0x764/0x800 [ 198.403076][ C1] tcp_recvmsg+0x334d/0x4ff0 [ 198.407669][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.413638][ C1] ? tcp_mmap+0x150/0x150 [ 198.417954][ C1] ? tcp_mmap+0x150/0x150 [ 198.422274][ C1] inet_recvmsg+0x237/0x7d0 [ 198.426762][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 198.431513][ C1] ? kmsan_get_shadow_origin_ptr+0x28c/0x3a0 [ 198.437470][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 198.442223][ C1] ? inet_sendpage+0x2c0/0x2c0 [ 198.446968][ C1] sock_read_iter+0x5be/0x660 [ 198.451630][ C1] ? kernel_sock_ip_overhead+0x340/0x340 [ 198.457240][ C1] __vfs_read+0xa67/0xc90 [ 198.461559][ C1] vfs_read+0x359/0x6f0 [ 198.465700][ C1] ksys_read+0x265/0x430 [ 198.469925][ C1] __se_sys_read+0x92/0xb0 [ 198.474324][ C1] __x64_sys_read+0x4a/0x70 [ 198.478907][ C1] do_syscall_64+0xbc/0xf0 [ 198.483332][ C1] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 198.489229][ C1] RIP: 0033:0x47fcb4 [ 198.493107][ C1] Code: ff ff cc cc cc cc e8 2b 41 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 45 31 d2 45 31 c0 45 31 c9 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 198.512698][ C1] RSP: 002b:000000c420179760 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 198.521086][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047fcb4 [ 198.529037][ C1] RDX: 0000000000001000 RSI: 000000c4203c8000 RDI: 0000000000000003 [ 198.537008][ C1] RBP: 000000c4201797b0 R08: 0000000000000000 R09: 0000000000000000 [ 198.544955][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000020 [ 198.552916][ C1] R13: 0000000000000020 R14: 0000000000000020 R15: ffffffffffffffff [ 198.562489][ C1] Kernel Offset: disabled [ 198.566813][ C1] Rebooting in 86400 seconds..